Fixing device for welding of L-shaped vacuum beam welding machine

Abstract

The utility model belongs to the technical field of vacuum beam welding machines, and particularly relates to a fixing device for welding of an L-shaped vacuum beam welding machine. The top of the welding chamber communicates with an electronic gun. A supporting seat is fixedly connected to the bottom of the welding chamber; a plurality of electric push rods are fixedly connected to the top of the supporting seat; the output end of the electric push rod is fixedly connected with a first transverse plate; a plurality of supporting columns are fixedly connected to the end part of the first transverse plate; the end part of the supporting column is fixedly connected with a clamp; a plurality of first exhaust holes are formed in the middle of the clamp; through the cooperation effect of the clamp and the first exhaust hole, after the clamp clamps the workpiece, air between the clamp and the workpiece can flow out through the first exhaust hole, air in a gap between the workpiece and the clamp is better controlled, the influence of gas molecules on welding is reduced, and the welding quality of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum beam welding machines, in particular to a welding fixing device for an L-shaped vacuum beam welding machine. Background Art

[0002] Electron beam welding is a welding method that uses the heat energy generated by the accelerated and focused electron beam bombarding the weldment placed in a vacuum or non-vacuum. Electron beam welding has the advantages of no need for welding rods, not easy to oxidize, good process repeatability and small thermal deformation, so it is widely used in many industries such as aerospace, atomic energy, national defense and military industry, automobiles and electrical and electrical instruments.

[0003] Electron beam welding equipment mainly consists of an electron beam gun, a vacuum chamber, a control system, a high-voltage power supply, a vacuum pump and other parts. The electron beam gun is the core part of the equipment, consisting of a cathode, an anode and a magnetic focusing system, which is responsible for generating and focusing the electron beam. The vacuum chamber is where the welding process takes place, and a high vacuum degree needs to be maintained to prevent gas molecules from interfering with the electron beam. The control system is responsible for adjusting the welding parameters and the movement of the electron beam to achieve precise control. The high-voltage power supply provides the voltage to accelerate the electrons.

[0004] When existing electron beam welding equipment clamps a workpiece, the uneven surface of the workpiece will cause the fixture to not fit tightly against the workpiece surface, and the air between the fixture and the workpiece cannot be discharged in time. This air will affect the welding process and reduce the welding quality.

[0005] Therefore, in view of the above problems, a welding fixture for an L-shaped vacuum beam welding machine is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes an L-shaped vacuum beam welding machine welding fixing device, comprising a welding chamber; the top of the welding chamber is connected to an electron gun; the bottom of the welding chamber is fixedly connected to a support seat; the top of the support seat is fixedly connected to a plurality of electric push rods; the output end of the electric push rod is fixedly connected to a first cross plate; the end of the first cross plate is fixedly connected to a plurality of support columns; the end of the support column is fixedly connected to a clamp; a plurality of first exhaust holes are opened in the middle of the clamp; by arranging the support columns, when the clamp clamps the workpiece, the contact area between the first cross plate and the clamp can be increased, the support of the first cross plate to the clamp is increased, and the stability of the clamp when clamping is improved; through the cooperation of the clamp and the first exhaust hole, after the clamp clamps the workpiece, the air between the clamp and the workpiece can flow out through the first exhaust hole, so as to better control the air in the gap between the workpiece and the clamp, reduce the influence of gas molecules on welding, and improve the welding quality of the device.

[0008] Preferably, a plurality of fixing rods are fixedly connected to the inner wall of the first exhaust hole; fixing rings are fixedly connected to the ends of adjacent fixing rods; a push rod is slidably connected inside the fixing ring; a first spring is fixedly connected to the end of the push rod; the first spring and the fixing ring are both in a fixed connection; the first spring is located between the first cross plate and the clamp; through the cooperation of the push rod and the first spring, the push rod and the first spring will move when the workpiece squeezes the push rod, and the first spring will apply pressure to the push rod toward the workpiece, thereby increasing the contact area between the device and the workpiece and improving the stability of the device when fixing the workpiece.

[0009] Preferably, a plurality of fixing holes are provided at the end of the push rod; the fixing holes are located between the fixture and the workpiece; a second spring is fixedly connected to the inner side wall of the fixing hole; a second cross plate is fixedly connected to the end of the second spring; through the cooperation of the second spring and the second cross plate, when the shaping part of the workpiece squeezes the second cross plate, the second cross plate and the second spring will move, and the second spring will generate a reaction force on the second cross plate when moving, so that the second cross plate clamps and fixes the workpiece shape, thereby enhancing the clamping stability of the device, increasing the contact area between the device and the workpiece, and reducing the shaking of the workpiece during welding.

[0010] Preferably, a plurality of rubber pads are fixedly connected to the end of the push rod; the rubber pad is an arc-shaped structure; by providing the rubber pad, the workpiece will also squeeze the rubber pad when squeezing the push rod, and the rubber pad will bend after being squeezed, thereby increasing the contact area between the device and the push rod and enhancing the friction force, thereby reducing the shaking of the workpiece during the welding process.

[0011] Preferably, a pull rope is fixedly connected between adjacent push rods; a plurality of arc-shaped rods are fixedly connected to the middle of the pull rope; by arranging the pull rope and the arc-shaped rod, when the workpiece contacts the fixture, the workpiece will also contact the pull rope and cause the pull rope to bend, and when the pull rope bends, the arc-shaped rod will change its angle to adapt to the shape of the workpiece, thereby increasing the contact area between the device and the workpiece and improving the stability of the device when fixing the workpiece.

[0012] Preferably, a plurality of suction cups are fixedly connected to the middle part of the clamp; a second exhaust hole is opened at the end of the suction cup; by providing the suction cup, when the workpiece comes into contact with the clamp, the suction cup will be squeezed to exhaust the air in the gap between the suction cup and the workpiece, so that the suction cup is adsorbed on the surface of the workpiece, thereby reducing the shaking of the workpiece during welding and enhancing the stability of the device fixation.

[0013] Preferably, a plurality of brushes are fixedly connected to the middle of the pull rope; by providing the brushes, when the workpiece contacts the pull rope, it will also contact and rub against the brushes, thereby reducing impurities on the workpiece surface and reducing the influence of pollutants on the workpiece surface on welding.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model discloses an L-shaped vacuum beam welding machine welding fixture. By setting a support column, the contact area between the first horizontal plate and the fixture can be increased when the fixture clamps the workpiece, the support of the first horizontal plate to the fixture is increased, and the stability of the fixture when clamping is improved. Through the cooperation of the fixture and the first exhaust hole, after the fixture clamps the workpiece, the air between the fixture and the workpiece can flow out through the first exhaust hole, so as to better control the air in the gap between the workpiece and the fixture, reduce the influence of gas molecules on welding, and improve the welding quality of the device.

[0016] 2. The L-shaped vacuum beam welding machine welding fixing device described in the utility model, through the cooperation of the push rod and the first spring, when the workpiece squeezes the push rod, the push rod and the first spring will move, and the first spring will apply pressure to the push rod toward the workpiece, thereby increasing the contact area between the device and the workpiece and improving the stability of the device when fixing the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the main body of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the clamp in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the fixing ring in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the push rod in the utility model.

[0022] In the figure: 1. welding chamber; 12. electron gun; 13. support seat; 14. electric push rod; 15. first horizontal plate; 16. support column; 17. clamp; 18. first exhaust hole; 2. fixing rod; 22. fixing ring; 23. push rod; 24. first spring; 3. fixing hole; 32. second spring; 33. second horizontal plate; 4. rubber pad; 5. pull rope; 52. arc rod; 6. suction cup; 62. second exhaust hole; 7. brush. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Specific examples are given below.

[0025] See also Figures 1 to 3 As shown, an L-shaped vacuum beam welding machine welding fixing device described in an embodiment of the utility model comprises a welding chamber 1; the top of the welding chamber 1 is connected to an electron gun 12; the bottom of the welding chamber 1 is fixedly connected to a support seat 13; the top of the support seat 13 is fixedly connected to a plurality of electric push rods 14; the output end of the electric push rod 14 is fixedly connected to a first cross plate 15; the end of the first cross plate 15 is fixedly connected to a plurality of support columns 16; the end of the support column 16 is fixedly connected to a clamp 17; a plurality of first exhaust holes 18 are opened in the middle of the clamp 17; when working, the workpiece is placed on the top of the support seat 13 and the device is started, the electric push rod 14 will push the first cross plate 15 to approach the workpiece, and the first cross plate 15 will push the support column 16 and the clamp 17 to move together during the approaching process, and the clamp 17 will clamp the workpiece due to the force of the electric push rod 14 after contacting the workpiece, because the first A horizontal plate 15 and a clamp 17 are fixedly connected by multiple support columns 16, which provide necessary support for the clamp 17 and increase the stability of clamping. At this time, the air in the welding chamber 1 is extracted, and the air in the gap between the workpiece and the clamp 17 will flow out through the first exhaust hole 18. Finally, a vacuum environment will be formed in the welding chamber 1, and the workpiece can be vacuum electron beam welded. By setting the support columns 16, when the clamp 17 clamps the workpiece, the contact area between the first horizontal plate 15 and the clamp 17 can be increased, the support of the first horizontal plate 15 to the clamp 17 is increased, and the stability of the clamp 17 when clamping is improved. Through the cooperation of the clamp 17 and the first exhaust hole 18, after the clamp 17 clamps the workpiece, the air between the clamp 17 and the workpiece can flow out through the first exhaust hole 18, so as to better control the air in the gap between the workpiece and the clamp 17, reduce the influence of gas molecules on welding, and improve the welding quality of the device.

[0026] See also Figure 3As shown, a plurality of fixing rods 2 are fixedly connected to the inner wall of the first exhaust hole 18; a fixing ring 22 is fixedly connected to the ends of the adjacent fixing rods 2; a push rod 23 is slidably connected inside the fixing ring 22; a first spring 24 is fixedly connected to the end of the push rod 23; the first spring 24 and the fixing ring 22 are both fixedly connected; the first spring 24 is located between the first cross plate 15 and the clamp 17; when the clamp 17 contacts the workpiece, the workpiece contacts the push rod 23 and applies pressure to the push rod 23, driving the push rod 23 to slide inside the fixing ring 22 When the push rod 23 moves, the first spring 24 will be stretched when sliding, and the first spring 24 will release elastic potential energy after being stretched, applying pressure to the push rod 23 toward the workpiece, and then the push rod 23 will squeeze the surface of the workpiece to achieve clamping and fixing of the workpiece; through the cooperation of the push rod 23 and the first spring 24, when the workpiece squeezes the push rod 23, the push rod 23 and the first spring 24 will move, and the first spring 24 will apply pressure to the push rod 23 toward the workpiece, thereby increasing the contact area between the device and the workpiece and improving the stability of the device when fixing the workpiece.

[0027] See also Figure 3 and Figure 4 As shown, a plurality of fixing holes 3 are provided at the end of the push rod 23; the fixing hole 3 is located between the fixture 17 and the workpiece; a second spring 32 is fixedly connected to the inner side wall of the fixing hole 3; a second cross plate 33 is fixedly connected to the end of the second spring 32; when the push rod 23 contacts the workpiece, the shape of the workpiece surface will contact and squeeze the second cross plate 33, driving the second cross plate 33 to compress the second spring 32, and the second spring 32 will apply a reaction force to the second cross plate 33 after compression. At this time, the second cross plate 33 will squeeze the shape of the workpiece surface to achieve clamping and fixing of the shape of the workpiece surface; through the cooperation of the second spring 32 and the second cross plate 33, when the shape of the workpiece is squeezed by the second cross plate 33, the second cross plate 33 and the second spring 32 will move, and the second spring 32 will generate a reaction force on the second cross plate 33 when moving, so that the second cross plate 33 clamps and fixes the shape of the workpiece, enhances the stability of the device clamping, increases the contact area between the device and the workpiece, and reduces the shaking of the workpiece during welding.

[0028] See also Figure 3 and Figure 4As shown, a plurality of rubber pads 4 are fixedly connected to the end of the push rod 23; the rubber pad 4 is an arc-shaped structure; when the workpiece squeezes the push rod 23, the rubber pad 4 will also be squeezed by the workpiece, and the rubber pad 4 will bend under the action of pressure until it is tightly attached to the push rod 23. At this time, the workpiece will contact the surface of all rubber pads 4, increasing the contact area between the workpiece and the push rod 23 and increasing the friction between the workpiece and the push rod 23; by providing the rubber pad 4, the workpiece will also squeeze the rubber pad 4 when squeezing the push rod 23, and the rubber pad 4 will bend after being squeezed, increasing the contact area between the device and the push rod 23 and enhancing the friction, which can reduce the shaking of the workpiece during welding.

[0029] See also Figure 3 As shown, a pull rope 5 is fixedly connected between adjacent push rods 23; a plurality of arc-shaped rods 52 are fixedly connected to the middle of the pull rope 5; when the fixture 17 clamps the workpiece, the shape of the workpiece surface will come into contact with the pull rope 5 and cause the pull rope 5 to bend, and when the pull rope 5 bends, the angle of the arc-shaped rod 52 on the surface will also change, and then the arc-shaped rod 52 will clamp and fix the shape of the workpiece surface; by setting the pull rope 5 and the arc-shaped rod 52, when the workpiece contacts the fixture 17, the workpiece will also come into contact with the pull rope 5 and cause the pull rope 5 to bend, and when the pull rope 5 bends, the angle of the arc-shaped rod 52 will change to adapt to the shape of the workpiece, thereby increasing the contact area between the device and the workpiece and improving the stability of the device when fixing the workpiece.

[0030] See also Figure 3 As shown, a plurality of suction cups 6 are fixedly connected to the middle part of the clamp 17; a second exhaust hole 62 is provided at the end of the suction cup 6; when the workpiece comes into contact with the clamp 17, the suction cup 6 will be squeezed, and the air between the workpiece and the suction cup 6 will be discharged through the second exhaust hole 62 during the squeezing, and then the suction cup 6 will adsorb the surface of the workpiece; by providing the suction cup 6, when the workpiece comes into contact with the clamp 17, the suction cup 6 will be squeezed, and the air in the gap between the suction cup 6 and the workpiece will be discharged, so that the suction cup 6 is adsorbed on the surface of the workpiece, thereby reducing the shaking of the workpiece during welding and enhancing the stability of the device fixation.

[0031] See also Figure 3 As shown, a plurality of brushes 7 are fixedly connected to the middle of the pull rope 5; when the workpiece contacts the pull rope 5, it will also contact and rub against the brush 7. When the brush 7 rubs against the workpiece, it will clean the surface of the workpiece and reduce the debris particles on the surface of the workpiece; by providing the brush 7, when the workpiece contacts the pull rope 5, it will also contact and rub against the brush 7, thereby reducing the impurities on the surface of the workpiece and reducing the influence of pollutants on the surface of the workpiece on welding.

[0032] Working principle: After placing the workpiece on top of the support seat 13 and starting the device, the electric push rod 14 will push the first cross plate 15 to approach the workpiece. In the process of approaching, the first cross plate 15 will push the support column 16 and the clamp 17 to move together. After the clamp 17 comes into contact with the workpiece, the workpiece will be clamped due to the force of the electric push rod 14. Because the first cross plate 15 and the clamp 17 are fixedly connected by multiple support columns 16, the necessary support is provided to the clamp 17, which increases the stability of the clamping. At this time, the air in the welding chamber 1 is extracted, and the air in the gap between the workpiece and the clamp 17 will pass through the first exhaust hole 18 flows out, and finally a vacuum environment is formed in the welding chamber 1, and vacuum electron beam welding can be performed on the workpiece; when the clamp 17 contacts the workpiece, the workpiece contacts the push rod 23 and applies pressure to the push rod 23, driving the push rod 23 to slide in the fixing ring 22, and the push rod 23 will stretch the first spring 24 when sliding, and the first spring 24 will release elastic potential energy after stretching, and apply pressure to the push rod 23 toward the workpiece, and then the push rod 23 will squeeze the surface of the workpiece to achieve clamping and fixing of the workpiece; when the push rod 23 contacts the workpiece, the shape of the workpiece surface will come into contact with the second cross plate 33 The second spring 32 is pressed against the second cross plate 33, and the second cross plate 33 is driven to compress the second spring 32. After being compressed, the second spring 32 will exert a reaction force on the second cross plate 33. At this time, the second cross plate 33 will press the surface shape of the workpiece to achieve clamping and fixing of the surface shape of the workpiece; when the workpiece presses the ejector rod 23, the rubber pad 4 will also be pressed by the workpiece. Under the action of pressure, the rubber pad 4 will bend until it is tightly attached to the ejector rod 23. At this time, the workpiece will contact the surface of all rubber pads 4, increasing the contact area between the workpiece and the ejector rod 23, and increasing the friction between the workpiece and the ejector rod 23. When the tool 17 clamps the workpiece, the shape of the workpiece surface will come into contact with the pull rope 5 and cause the pull rope 5 to bend. When the pull rope 5 bends, the angle of the arc rod 52 on the surface will also change, and then the arc rod 52 will clamp and fix the shape of the workpiece surface; when the workpiece comes into contact with the fixture 17, the suction cup 6 will be squeezed. During the squeezing, the air between the workpiece and the suction cup 6 will be discharged through the second exhaust hole 62, and then the suction cup 6 will adsorb the surface of the workpiece; when the workpiece comes into contact with the pull rope 5, it will also come into contact with and rub against the brush 7. When the brush 7 rubs against the workpiece, it will clean the surface of the workpiece and reduce debris particles on the surface of the workpiece.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A welding fixture for an L-shaped vacuum beam welding machine, comprising a welding chamber (1), characterized in that: The top of the welding chamber (1) is connected to an electron gun (12); the bottom of the welding chamber (1) is fixedly connected to a support seat (13); the top of the support seat (13) is fixedly connected to a plurality of electric push rods (14); the output ends of the electric push rods (14) are fixedly connected to a first horizontal plate (15); the ends of the first horizontal plate (15) are fixedly connected to a plurality of support columns (16); the ends of the support columns (16) are fixedly connected to a clamp (17); and a plurality of first exhaust holes (18) are provided in the middle of the clamp (17).

2. The L-shaped vacuum beam welding machine welding fixture according to claim 1, characterized in that: A plurality of fixing rods (2) are fixedly connected to the inner wall of the first exhaust hole (18); fixing rings (22) are fixedly connected to the ends of adjacent fixing rods (2); a push rod (23) is slidably connected inside the fixing ring (22); a first spring (24) is fixedly connected to the end of the push rod (23); the first spring (24) and the fixing ring (22) are both in a fixed connection relationship; the first spring (24) is located between the first horizontal plate (15) and the clamp (17).

3. The L-shaped vacuum beam welding machine welding fixture according to claim 2, characterized in that: A plurality of fixing holes (3) are formed at the end of the push rod (23); the fixing holes (3) are located between the fixture (17) and the workpiece; a second spring (32) is fixedly connected to the inner side wall of the fixing hole (3); and a second cross plate (33) is fixedly connected to the end of the second spring (32).

4. The L-shaped vacuum beam welding machine welding fixture according to claim 3, characterized in that: A plurality of rubber pads (4) are fixedly connected to the end of the push rod (23); the rubber pads (4) are of an arc-shaped structure.

5. The L-shaped vacuum beam welding machine welding fixture according to claim 4, characterized in that: A pull rope (5) is fixedly connected between adjacent top rods (23); and a plurality of arc-shaped rods (52) are fixedly connected to the middle of the pull rope (5).

6. The L-shaped vacuum beam welding machine welding fixture according to claim 5, characterized in that: A plurality of suction cups (6) are fixedly connected to the middle of the clamp (17); and a second exhaust hole (62) is provided at the end of the suction cup (6).

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